[REPLACEMENT OVER BLOW CAP] The radiator cap holds the coolant inside the radiator, but it also works as a two-way valve that keeps the right pressure inside so the radiator does it work correctly. Symptoms of a Bad Radiator Cap: air enters the system, low coolant level, coolant leaks, overflowing reservoir, overheating engine. [REPLACES PART] Coolant cap 15066786;15075118;22652695;22671020;RC98 [FRIENDLY NOTE] It is extremely important to always make sure to allow the engine to cool down before removing the radiator cap, as removing the cap from a can cause sudden coolant spray and severe . This is NOT a real part, it's a aftermarket replacement part manufactured by Condition: New Compatible with the Following Vehicles: For : Escalade 2002-2006, Escalade ESV 2003-2006, Escalade EXT 2002-2006, SRX 2004-2009 For : 1500 / 2500 2002-2006, Captiva Sport 2012-2015, Cavalier 1999-2005, Classic 2004-2005, Cobalt 2005-2010, 2005-2017, Express 2500 2006-2006, 1999-2012, 2003-2006, 1500 1999-2006, 1500 HD 2001-2003 2005-2006, 2500 1999-2004, 2500 HD 2001-2006, 3500 2001-2006, 1500 / 2500 2000-2006, 2000-2006, 2013-2017 For : Acadia 2013-2016, Acadia Limited 2017-2017, 2500 2006-2006, 1500 1999-2006, 1500 HD 2001-2003 2005-2006, 2500 1999-2004, 2500 HD / 3500 2001-2006, Terrain 2010-2017, / XL 1500 / XL 2500 2000-2006 For : G5 2007-2009, G6 2005-2010, Grand Am 1999-2005, Sunfire 1999-2005, Solstice 2006-2009, Torrent 2006-2009 For : Aura 2007-2009, Ion 2003-2007, 2007-2010, Vue 2002-2010 For : Alero 1999-2004, Cutlass 1999-1999, Intrigue 2000-2002 For : H2 2003-2009 For : XL-7 2007-2009 For : Enclave 2013-2017 colour: black Material: plastic Package Contents: 10 x Radiator Cap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.